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G. CLARK, Steam Radiator.

(No Model.)

-No. 237,819. Paterited Feb. 15,1881.

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N-PETERS, PHOTO-LI'IHOGRAFHER. WASHINGTON D C.

UNrrnn STATES ,PATENT Orricn.

enonen CLARK, or wns'r TROY, New YORK.

STEAM-RADIATOR.

SPECIFICATION forming part of Letters Patent No. 237,819, dated February15, 1881.

Application filed July 8, 1880. (No model.)

To all whom it may concern:

Be it known that I, GEORGE CLARK, a citizen of the United States,residing at West Troy, in the county of Albany, and State of New York,have invented new and useful Improvements in Steam-Radiators, of whichthe following is a specification.

My invention relates to certain new and useful improvements insteam-radiators. It has for its object to produce a more thoroughcirculation of the cold air to be heated and it consists in thearrangement of the steam-pipes in two piles with a space between them toform a flue, said flue being so divided horizontally as to form a seriesof air-heating chambers at different altitudes, and adapted to receiveand expel the air to be heated, as will be hereinafter more fully setforth.

In order that those skilled may fully understand my invention,'I willproceed to describe the same, referring by letters to the accompanyingdrawing, which represents a central cross-section of a steam-radiatorembodying my invention.

A A are the steam-pipes or' side plates, having the outward appearanceof corrugated plates, through which the steam is caused to circulate inthe usual manner, being received and discharged through pipes shown indotted lines. The corrugated plates or tubes are formed in couplets withthin webs B B B B, 850., so that when they are arranged in the usual waya short distance apart a vertical space is left between them, and whenthe ends are surrounded by a solid plate, 0, said space has nocommunication with the outside air, except as hereinafter explained.These side plates, formed as described, are mounted upon a suitablebase, D, and surmounted with a cap, E. The webs B are somewhat longer(vertically) than the webs B, in order that they may be perforated, asshown by the horizontal arrows, without weakening them too much. At thepoints B there are cast or otherwise formed with the webs horizontalplates F, extending inwardly to the center of the space between the twoside walls,and outwardly a short distance only, to form adeflecting-plate at such point. The inwardly-projecting portions, whenthe sides of the radiator are in position, firmly abut to form acontinuous partition, thus forming compartments G, the number of suchcompartments depending upon the location and number of plates I in whichparticular I do not wish to limit myinvention. These plates may simplyabut, as described, or they may overlap, as shown at a, in the toppartition.

It will be observed that the perforations through the webs B are belowand above the plates F, so that the lower one forms the exit from onecompartment, G and the upper one the inlet to the next compartmentabove.

The lowest or foundation steam-pipe may be cast'with a web, B, designedto rest in a suitable groove in the bottom or base plate, D. and bywhich it may be held in position, and the upper tier of pipes and thecap-plate E may be similarly connected.

The lowermost web, B, may be perforated to receive the strata of coldair nearest to the floor, or the plate D may be perforated, as seen at bb, and the cap-piece E should be perforated or cast open for final exit.

The inlets and exits to the several compartments are composed of aseries of perforations, so that the air is divided up into a series ofline streams, as I have found that this greatly facilitates the heatingof the same.

From the construction described it will be seen that the cold air atdifferent altitudes in a room 'is drawn in at the bottom of eachheating-compartment G, and in its travel upward is heated by radiationand escapes at the top of said chamber or compartment, theoutwardly-projecting portions of the plates F serving to direct ithorizontallyinto the room.

It will be observed that if the compartments G were formed into a singleflue by the removal of the plates F, and the perforations at B dispensedwith, the result would be a single continuous flue, into which the coldair would be drawn at the bottom only and rapidly discharged at the topwithout becoming thoroughly heated. By dividing up this space andproviding for the entrance of cold air at different altitudes a muchbetter result is accomplished.

I do not wish to confine myself to the exact details of constructiomasthey may be considerably varied without departing from the spirit of myinvention, the gist of which rests in the idea of forming a series ofair-heating compartments at different altitudes.

What I therefore claim as new, and desire to secure by Letters Patent,is-

5 l. A steam -heating radiator composed of pipes or steam-conduitshaving the outward appearance of corrugated plates, with weblikeconnections, and provided at one or more points with plates F, wherebytwo or more 10 compartments G are formed, substantially as and for thepurpose set forth.

2. The webs B, perforated above and below the plates F, substantially asand for the purpose set forth.

3. The plates F, extending externally a 15 short distance to formdeflectors, as hereinbcfore set forth.

In testimony whereof I have hereunto set my hand and seal in thepresence of two subscribing witnesses.

- GEORGE CLARK. [L. s.]

Witnesses GEORGE F. ALEXANDER, Isaac B. POTTER.

